David's Dos Game Library

MS-SQL 테이블 컬럼 조작(추가,수정,삭제)
 
컬럼 추가

ALTER TABLE ${TALBE_NAME} ADD ${COLUMN_NAME} ${COLUMN_TYPE}

1.NULL 허용

•Example
 
ALTER TABLE BOARD ADD SECURITY CHAR(1) NULL;

2.NULL 허용하지 않음(기본값 설정)

•Exxample
 
ALTER TABLE BOARD ADD SECURITY CHAR(1) NOT NULL CONSTRAINT DF_ADDR DEFAULT 'N';

컬럼 수정

ALTER TABLE ${TABLE_NAME} ALTER COLUMN ${COLUMN_NAME} ${COLUMN_TYPE}

•Example
 
ALTER TABLE BOARD ALTER COLUMN SECURITY VARCHAR(1) NULL;

컬럼명 수정

EXEC SP_RENAME '${TABLE_NAME.[OLD_COLUMN_NAME]}', '${NEW_COLUMN_NAME}', 'COLUMN'

•Example
 
EXEC SP_RENAME 'BOARD.[SECURITY]', 'NEW_SECURITY', 'COLUMN';

컬럼 삭제

ALTER TABLE ${TABLE_NAME} DROP COLUMN ${COLUMN_NAME}
 
•Example
 
ALTER TABLE BOARD DROP COLUMN SECURITY;